from tkinter import *
x = int(input("введите координаты Х"))
y = int(input("введите координаты Y"))
N = int(input("введите коэфициент увеличения"))

coords = [0,0,10,0,10,10,20,10,20,30,10,30,10,20,0,20]

root = Tk()
root.title("ИТ марафон")
root.geometry("500x500")

canvas = Canvas(bg="white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)

canvas.create_polygon(coords[0] *N+x, coords[1] *N+y,
                      coords[2] *N+x, coords[3] *N+y,
                      coords[4] *N+x, coords[5] *N+y,
                      coords[6] *N+x, coords[7] *N+y,
                      coords[8] *N+x, coords[9] *N+y,
                      coords[10] *N+x, coords[11] *N+y)

root.mainloop()

if N == 0 and x>=0 and x<=500 and y>=0 and y<=500:
    pass
else:
    if N > 0 and 0*N+x>=0 and 0*N+y>=0 and 20*N+x<=500 and 20*N+y<=500:
        pass
    else:
        if N < 0 and 20*N+x>=0 and 20*N+y>=0 and 0*N+x<=500 and 0*N+y<=500:
            pass
        else:
            print('Размер фигуры превышает максимальный размер поля')
            exit()
